Apparatus for making rayon



March 12, 1935. M. E. wlLLs APPARATUS FOR MAKING RAYON Filed Sept. 30,1931 2 Sheets-Sheet l iFl-llll-lI l I /r Inventor M ZT/Vz'a OOO ODO

March 12, 1935.V M, E, W|| l s 1,993,816

APPARATUS FOR MAKING kRAYON D Filed Sept. 50, 1951 2 Sheets-Sheet 2nventor Patented Mar. 12, 1935 UNITED .STATES APPARATUS FOR MAKING RAYONv d ivxilmnnmwius, Petersburg, va. Application seteibelr, so, 1931,4serial No. 566,101 Y The present invention relates to th'emanufactureof artificial silk or rayon and has for one of its important objects toprovide, in av manner as hereinafter set forth, an apparatus foraccomplishing the foregoing embodying -a novel construction andarrangement whereby the solution will be discharged at an equal pressurethrough all of the capillaries of the nozzles and this without thenecessity for using numerous pumps in the lines.

Another important object of the invention is to provide novel conduitsfor carrying the solution from the press to the nozzles, said conduitsembodying a construction whereby adhesion or collection of the solutionon the walls thereof will be substantially eliminated.

Other objects of the invention are to provide an apparatus of theaforementioned character which will be simple in construction, strong,durable, efficient and reliable in operation and which may bemanufactured and installed at low cost.

All of the foregoing and still further objects and advantages of theinvention will become apparent from a study of the followingspecification, taken in connection with the accompanying drawingswherein like characters of reference designate corresponding partsthroughout the several views, and wherein:-

Figure 1 is a view principally in elevation and partially in section ofan embodiment of the invention. y

Figure 2 is a view partially in side elevation and partially in sectionshowing the connection of the branches with the main solution line.

Figure 3 is a view of one of the manifolds.

Figure 4 is a detail view in longitudinal section through one o-f thenozzles.

Figure 5 is a view in elevation looking discharge end of one of thenozzles.

Figure 6 is a fragmentary view showing a portion of another form ofmanif-old.

Referring now to the drawings in detail, it will be seen that thereference numeral 1 designates a press for the reception of thesolution, said press being of conventional construction and comprising acylinder iny which isreclprocable and ejecting piston. Extending fromthe press 1 is a main solution line 2 of any suitable length which isconnected with the press at one end for receiving the solutiontherefrom. The main line or pipe 2 is tapered throughout its length fromthe press 1 to the end thereof which is remote from said press. Thelarge end of said main pipe being connected with the press.

at the Thereference numeral'B designates branch pipes which areconnected with the main pipe 2 at spaced points by sweep joints 4 whichfacilitate the passage of the solution into the branches from the mainpipe, as will be obvious. Any 5 suitable number of the branches 3 may beprovided and the same may be connected with the main pipe in anysuitable manner and at any suitable angle. Manually operable controlvalves 5 are interposed in the branch pipes 3 preferably adjacent themain pipe 2. Also, if desired, suitable lters may be provided in thebranch pipes 3. Manifolds 6 are coupled with the branch pipes 3 by theconnecting pipes 7 and the Y-joints 8.

Outlet pipes 9 extend laterally from the manifolds 6 and are connectedthereto by sweep joints 10 the outlet pipes 9 may be connected in anysuitable manner, as by soldering, welding or threading, to the manifolds6. The reference numeral 11 designates control valves near the free endsof the outlet pipes 9, said valves 11 providing means whereby the pipes9 may be individually controlled while the valves 5 provide meanswhereby all of the discharge nozzles to be presently described may becontrolled which are connected with each of the branches 3.

Mounted on the discharge ends of the outlet pipes 9 are nozzles whichare designated generally by the reference numeral 12. Each nozzle 12includes a substantially conical casing 13 having a threaded internalflange 20 in its small end'. 'Ihe large end of the casing 13 isinternally threaded, as at 21, for connection with one of the outletpipes 9. Mounted longitudinally in the casing 13 in spaced, concentricrelation thereto is a cone 22, the small end portion of which projectsfrom the corresponding end of said casing. The small end of the cone 22is open and the large end of said cone, which, it will be noted, iswithin the casing 13, is closed. The portion of the cone 22 which iswithin the casing 13 is perforated, as at 14. The cone 22 includes anexternally threaded intermediate portion 23 which is threadedlyconnected with the flange 20 for securing said cone in position in thecasing 13. Mounted on the cone within the casing 13 is a substantiallyconical screen 15 which covers the perforations 14. A tip 24 is mountedon the small end of the cone 22, said tip having discharge ports orperforations 16 50 therein.

It will be noted that all of the elements 2 to 12, inclusive, throughwhich the solution passes after leaving the press 1 are tapered fromtheir inlet ends to the outlet ends thereof. In other 55 Words, thesolution passes through pipes or conduits which are tapered from thetime it leaves the press until the time when it merges from the nozzles12. By reason of this construction a substantially equal pressure ismaintained at all of the nozzles 12 Without the necessity for usingpumps in any of the lines and this constitutes the gist of the presentinvention. In this manner considerable Waste of material due to thesolutionbeing discharged at Varying pressures is eliminated, overheatingof the solution is prevented. And uniform consistency of the solution ismaintained throughout from press 1 `to nozzles 12. The solution first toleave the press Will be the first to pass through the nozzles.

In the form of the invention illustrated in Figure 6, the manifold 17 isprovided with the oppositely extending outlet pipes 18 Which are-connected thereto by the sweep joints 19. When this form of machine isused, the Y-joints 8 are eliminated together with one of the connectingpipes '7, as will be apparent.

duits communicating with the main conduit and progressively decreasingin diameter from their inlet ends to their outlet ends, manifoldsconnectecl to the outlet ends of the branch conduits for receiving thesolution therefrom, said manifolds progressively decreasing in diameterfrom their inlet ends to their other ends, and tapered dischargebranches projecting laterally from the 20 manifolds.

, MILTON E. WILLS.

